Galaxy M20, Galaxy M10 were put on sale for the first time on February 5 Samsung did not mention how many Galaxy M20, Galaxy M10 units were sold Galaxy M-series phones will now go on sale again on February 7 Samsung on Tuesday released its two industry-first Galaxy M smartphones – the Galaxy M10 and Galaxy M20 - for sale on Amazon India that claimed to have witnessed an "unprecedented" first day sale record. However, the company did not mention how many units were sold and for how long the online sale lasted before Amazon India put out the 'sold out' sign for the M-series smartphones. The Galaxy M-series phones will now go on sale again on February 7. The India-first smartphones come with features like Infinity V display and massive battery power and 3x faster charging technology. The smartphones runs on Android 8.1 Oreo with the company's custom user interface on top.